Arknights · Update notes
Episode 17 and Celebration Overview
01 MAIN THEME EPISODE 17: CRITICAL PHASE TRANSITION OPEN TIME: October 14, 2026, 08:00 (UTC-7) EXTREME MODE OPEN TIME: October 21, 2026, 16:00 (UTC-7) UNLOCK REQUIREMENT: Clear Main Storyline 3-8 DETAILS: During the period from October 14, 08:00 to October 28, 2026, 03:59 (UTC-7), the unlock requirement for Main Theme
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Featured rewards
Episode 17 and reward deadlines
Episode 17 opened October 14 at 08:00 UTC−7.
Through October 28 at 03:59, clearing 3-8 suffices; afterward, clear 16-19.
Extreme Mode opens October 21 at 16:00.
Limited currency drops end October 28; the exchange closes November 4.
Currency from missions completed before November 4 remains claimable until November 11 at 03:59.
Progress and first-clear rewards are retained.
Progression and main rewards
Collect Joint Terminal clues and complete stage missions for 6★ Viy, tokens, module items and growth resources.
The shop includes sanity items, supply crates, furniture and Pinecone/Spot outfits.
The five newly introduced Operators receive bonus trust on eligible sanity stages, excluding Annihilation, Intermezzi and SideStory.
Viy is an event reward, not a recruitable pool addition.
Recruitment, login and daily limits
Limited recruitment and the daily free pull end October 28 at 03:59 UTC−7.
Free pulls reset at 04:00 and do not stack.
At 300 pulls, one bonus limited Kal’tsit is granted without affecting pity or contracts.
Ten login days award a dedicated ten-pull, GALLUS², Aroma’s outfit and furniture; the permit expires with the banner.
Zelgrad offers two daily draws and awards the larger Orundum amount; below 400 grants one extra draw next day, capped at three without carryover.
Permanent changes and selection recruitment
Kernel Locating runs October 20, 04:00–November 3, 03:59 UTC−7.
Lock two 6★ and three 5★ rate-ups, then choose one of each rarity for certificate exchange.
Existing Kernel 6★ pity carries over.
Other changes add 30 maximum Sanity, up to 210; a level-80/1,500-login-day background; Pallas and GALLUS² to Recruit; and Integrated Strategies modules for Specter the Unchained and Typhon.
Store, purchase limits and expiry
Most celebration packs, outfits and furniture sell through November 11 at 03:59 UTC−7.
Standard and Kernel 6★ selectors have different candidate pools and expire December 14 at 03:59.
Training devices raise already-Elite-2 6★/5★ Operators to level 90/80 without refunding prior investment.
The skill-training pack permits two purchases.
Existing-account special recruitment sells twice through October 28, with permits expiring November 26; new accounts may buy twice within 14 registration days, with permits expiring 30 days after purchase.